TW200606350A - Bearing unit, motor with it, and electronic apparatus - Google Patents

Bearing unit, motor with it, and electronic apparatus

Info

Publication number
TW200606350A
TW200606350A TW094103867A TW94103867A TW200606350A TW 200606350 A TW200606350 A TW 200606350A TW 094103867 A TW094103867 A TW 094103867A TW 94103867 A TW94103867 A TW 94103867A TW 200606350 A TW200606350 A TW 200606350A
Authority
TW
Taiwan
Prior art keywords
shaft
bearing
housing
radial
thrust
Prior art date
Application number
TW094103867A
Other languages
Chinese (zh)
Other versions
TWI278579B (en
Inventor
Kenichiro Yazawa
Takeshi Kaneko
Yoshiaki Kakinuma
Yuji Shishido
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of TW200606350A publication Critical patent/TW200606350A/en
Application granted granted Critical
Publication of TWI278579B publication Critical patent/TWI278579B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S384/00—Bearings
    • Y10S384/90—Cooling or heating
    • Y10S384/903—Retaining ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Motor Or Generator Frames (AREA)
  • Sliding-Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

To prevent a shaft from being drawn up from a housing and preclude lubricating oil at the bearing surfaces from going out caused by drawup of the shaft. The invention comprises the shaft 31, a radial bearing 33 to support the shaft 31 in the circumferential direction, a thrust bearing 34 to support one end of the shaft 31 in the thrust direction, the housing 37 furnished internally with the radial bearing 33 and the thrust bearing 34 and structured sealedly except a shaft inserting hole into which the shaft 31 is inserted, a slipoff preventive member 46 to prevent the shaft 31 from slipping off from the radial bearing 33, and viscous fluid 38 to be put fully in the housing 37, wherein the slipoff preventive member 46 is made of an elastic material deforming elastically only in the radial direction of the shaft and difficult to make deformation in the axial direction.
TW094103867A 2004-02-06 2005-02-05 Bearing unit, motor with it, and electronic apparatus TWI278579B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004030987A JP2005221029A (en) 2004-02-06 2004-02-06 Bearing unit, motor with it, and electronic apparatus

Publications (2)

Publication Number Publication Date
TW200606350A true TW200606350A (en) 2006-02-16
TWI278579B TWI278579B (en) 2007-04-11

Family

ID=34879203

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094103867A TWI278579B (en) 2004-02-06 2005-02-05 Bearing unit, motor with it, and electronic apparatus

Country Status (5)

Country Link
US (1) US7258487B2 (en)
JP (1) JP2005221029A (en)
KR (1) KR20050079635A (en)
CN (1) CN1651788A (en)
TW (1) TWI278579B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007032727A (en) * 2005-07-27 2007-02-08 Sony Corp Bearing unit and rotating device using the same
JP2007198479A (en) * 2006-01-25 2007-08-09 Sony Corp Bearing unit and motor using the same
DE102006005604B4 (en) * 2006-02-06 2007-11-22 Minebea Co., Ltd. Fluid dynamic storage system
JP4835202B2 (en) * 2006-02-28 2011-12-14 ソニー株式会社 Bearing unit and motor using the bearing unit
WO2007119428A1 (en) * 2006-03-27 2007-10-25 Ntn Corporation Hydrodynamic bearing device
JP5020652B2 (en) * 2007-02-05 2012-09-05 Ｎｔｎ株式会社 Hydrodynamic bearing device
TWI461253B (en) * 2007-03-30 2014-11-21 Thk Co Ltd Rolling bearing, and rotary table apparatus
JP2009014152A (en) * 2007-07-06 2009-01-22 Sony Corp Bearing unit, and motor and electronic apparatus having bearing unit
KR100940157B1 (en) 2008-04-16 2010-02-03 삼성전기주식회사 A spindle motor
KR20100029444A (en) * 2008-09-08 2010-03-17 엘지이노텍 주식회사 Apparatus for preventing oil leakage in spindle motor
DE102010042118A1 (en) * 2010-10-07 2012-04-12 Robert Bosch Gmbh Slide bearing, method for producing a plain bearing and use of a sliding bearing
TWI436720B (en) * 2011-12-26 2014-05-01 Acer Inc Electronic device and connecting mechanism thereof
DE202012104586U1 (en) * 2012-11-26 2014-02-27 Ebm-Papst St. Georgen Gmbh & Co. Kg Arrangement for supporting a shaft with axial securing
EP2899414A1 (en) 2014-01-23 2015-07-29 Siemens Aktiengesellschaft Damped bearing of a rotor shaft
US10158269B1 (en) * 2017-06-16 2018-12-18 Panasonic Intellectual Property Management Co., Ltd. Electric motor and heat sink apparatus using the same
DE102019126660A1 (en) * 2019-10-02 2021-04-08 Minebea Mitsumi Inc. Rotor with a bearing

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457472A (en) * 1944-05-15 1948-12-28 Weatherhead Co Packless globe valve
US3121583A (en) * 1962-10-26 1964-02-18 Carl A Damm Connector aligning device
US3663849A (en) * 1970-12-31 1972-05-16 Msl Ind Inc Snap-on retainer for motor rotor shaft
DE2533804C3 (en) * 1975-07-29 1978-10-19 Teldix Gmbh, 6900 Heidelberg Bearings for the rotor of an OE spinning machine
FI53148B (en) 1976-07-05 1977-10-31 Valmet Oy
DE69125878T2 (en) * 1990-02-27 1997-12-18 Canon Kk Device for supporting a shaft within a sleeve by means of a dynamic pressure bearing
JP2000175401A (en) 1998-12-08 2000-06-23 Nippon Densan Corp Disk drive, and manufacture of hard disk drive and the disk drive
GB2357322B (en) * 1999-12-17 2004-05-19 Sunonwealth Electr Mach Ind Co Bearing structures for a motor rotor
US6318976B1 (en) * 2000-04-10 2001-11-20 Hsieh Hsin-Mao Heat dissipation fan
US6902323B2 (en) * 2000-11-02 2005-06-07 Delta Electronics Inc. Locking device and its related assemblage
US6498412B2 (en) * 2001-01-26 2002-12-24 Sunonwealth Electric Machine Industry Co., Ltd. Fixing structure for a rotor of a brushless motor
TW547869U (en) * 2002-07-10 2003-08-11 Hon Hai Prec Ind Co Ltd Bearing device for motor

Also Published As

Publication number Publication date
CN1651788A (en) 2005-08-10
US7258487B2 (en) 2007-08-21
TWI278579B (en) 2007-04-11
US20050220379A1 (en) 2005-10-06
KR20050079635A (en) 2005-08-10
JP2005221029A (en) 2005-08-18

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees